<template>
  <div>
    <h1>One</h1>
    <p>{{count}}</p>
    <button @click="count++">累加</button>
  </div>
</template>

<script>
export default {
name:"One",
data(){
    return{
        count:0
    }
},
mounted(){
    console.log("One组件挂载");
},
beforeDestroy(){
    console.log("One组件销毁");
}
}
</script>

<style>

</style>